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Finding the Fourth Proportional to 117,438.62, 176,151.54 and 72,468.54

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Solution

The fourth proportional to 117,438.62, 176,151.54 and 72,468.54 is: 108,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,438.62 : 176,151.54 = 72,468.54 : x
  2. Step 2: Convert to fraction form
    117,438.62/176,151.54 = 72,468.54/x
  3. Step 3: Cross multiply
    117,438.62x = 176,151.54 × 72,468.54
  4. Step 4: Simplify right side
    117,438.62x = 12,765,444,922.55
  5. Step 5: Solve for x
    x = 12,765,444,922.55/117,438.62
  6. Step 6: Final answer
    x = 108,698.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.